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hv: risc-v: use tp register directly for arch_get_pcpu_id

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Use tp register directly for arch_get_pcpu_id. This can eliminate the
unnecessary mv instruction.

Tracked-On: #8791
Signed-off-by: Jian Jun Chen <jian.jun.chen@intel.com>
Acked-by: Wang, Yu1 <yu1.wang@intel.com>
This commit is contained in:
Jian Jun Chen
2025-10-10 13:31:05 +08:00
committed by acrnsi-robot
parent 0a8eb09454
commit 3449b62dfb
1 changed files with 1 additions and 3 deletions
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4
hypervisor/include/arch/riscv/asm/cpu.h
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@@ -117,9 +117,7 @@ struct stack_frame {
*/ */
static inline uint16_t arch_get_pcpu_id(void) static inline uint16_t arch_get_pcpu_id(void)
{ {
uint16_t pcpu_id; register uint16_t pcpu_id asm ("tp");
asm volatile ("mv %0, tp" : "=r" (pcpu_id) : : );
return pcpu_id; return pcpu_id;
} }